black screen when i turn on my wii

recently,i bricked my Wii because i installed a bad theme.but before i had did that i uninstalled my black system menu theme.soo after i installed the bad theme i returned back to the home brew channel and was about to exit so i could go check the theme out but then i realized that my Wii mote wasn't responding it would just blink then stop so i just powered it off.when i turned it back on it was just a black screen i tried powering it off and holding the rest button but the menu thing didn't pop up. i have installed priiloader and bootmii and all the other stuff i needed but non of that is really helping.


my Wii is version 4.3u
i hacked it using letter bomb



my question is how can fix my Wii without buying anything, sending it to nintendo,and using nands and mod chips?